baber/WOPTO huggingface dataset:
Patent DE-2421621-A1 (DE)
Title: Jet propelled unit withdraw pulsating combustion - has rockets downstream of combustion chamber with nozzles entering diverging jet nozzle
Inventor: EICK WERNER DIPL ING
IPC: F02K7/02
Filed: 1974-05-04
Abstract: The rockets are arranged downstream of the combustion chamber, surrounding a section of the jet propulsion unit whose diameter is smaller than that of the combustion chamber. The outlet nozzles of the rockets penetrate through the diverging section of the jet propulsion outlet nozzle. Between the jet propulsion unit and its outer enclosure there may be an open passageway for additional air which surrounds the rockets. The common outlet nozzle section of rockets and jet unit may be capable of being jettisoned. The rockets may be capable of being expelled. They may be ignitable in pairs and arranged as several sets, one behind the other.
Patent DE-2428369-A1 (DE)
Title: Demodulator for phase modulated signal - has multiplier with electronic switch for (dis)connection of signal
Inventor: DUEMICHEN VOLKER DIPL ING
IPC: H03D3/00
Filed: 1974-06-12
Abstract: The phase modulated signal is produced by modulation of one or several carriers whose frequencies are multiples of a fundamental frequency, the signal consists of consecutive modulation sections, and is applied to a multiplier. A pulse generator generates a rectangular pulse train, with each pulse appearing within a modulation section, with its width equal to the reciprocal of the fundamental frequency. A switching stage is provided in the path of locally generated carrier to the multiplier and is controlled by the pulses. The phase modulated signal is multiplied by the signal passed through the switching stage, and the product is applied to an integrator delivering the demodulated signal.
Patent DE-2430081-A1 (DE)
Title: UV-light hardening acrylate ester compsns. - contg. benzoin derivs. as photo-initiators, giving improved stability in dark
Inventor: ROSENKRANZ HANS-JUERGEN DR
IPC: C08F290/06
Filed: 1974-06-22
Abstract: Compsns. contg. (A) 20-99.5 wt. % reaction prod. of at least one polyepoxide with more than one epoxide gp. per molecule and (meth)acrylic aciw with 0.6-1 COOH gps. per epoxide gp. and (B) 0-79.5 wt. % polyfunctional (meth)acrylate ester, with (C) 0.5-20% based on (A+B) photoinitiator consisting of a benzoin deriv. of formula (in which Ar is an aromatic gp. opt. substd. with alkyl, alkoxy or halogen; R1 is 1-12C alkyl, cycloalkyl, tetrahydropyranyl or 1-methoxy ethyl; R2 is allyl, benzyl opt. substd. with Cl or -CH2CH2X; X is CN. CONH2 or COOR3; and R3 is H or 1-10C alkyl). Compsns. are useful as coating or impregnating materials, or as binders for printing inks, which are hardened by exposure to UV light. The initiators give highly reactive compsns. with improved storage stability in the dark, and without discolouration of the hardened film.
Patent DE-2433164-A1 (DE)
Title: Radio sender and receiver - designed for analogue speech transmission in networks with more than one H.F. channel
Inventor: SMITKA WOLFGANG
IPC: H04W48/16
Filed: 1974-07-10
Abstract: When the receiver is in stand-by state, the channels are periodically and consecutively connected, until a call is detected. When a connection is to be established, channels are consecutively tested until a free channel is found. In stand-by state the selective call sender and evaluating device are set to the station's own address, and are reset during a connection reception to the required subscriber address. Selective call frequency range is such that the calls are not audible in the receiver. Selective call sender continuously transmits the set selective call during sender operating at a level lower than the calling level, and a time switch automatically resets the station to stand-by state when, after a certain time, it neither transmits nor is its call received.
Patent DE-2433927-A1 (DE)
Title: Liquid fuel heating boiler built in hot water element - which occupies the space between cylindrical and frusto-conical compartments of the main boiler
Inventor: KRUEPE ERNST DR ING
IPC: F24H1/28
Filed: 1974-07-15
Abstract: The burner points axially into a flame chamber enclosed by a thimble-shaped water-jacket surrounded by a second parallel frusto-conical water jacket, the hot gases turning back again over the lip of the thimble to pass between the two jackets to an axial exhaust. A third cylindrical outer water jacket surrounds the second. The hot water element occupies the space between the second and third jackets. The hot water elements is coated with a corrosion proof layer of material e.g. n nickel bronze.
Patent DE-2442874-A1 (DE)
Title: Amplifier cct. for binary signals in railway signalling - forms comparator with comparator chain and external transformer
Inventor: BEYERSDORFF ROLF DIPL ING
IPC: H03K19/007
Filed: 1974-09-06
Abstract: A threshold transistor is assigned to each signal line and supplied from the external voltage transformer while one of the inputs of the respective comparator is connected to the transistor base. The output of each transistor is connected to a second input of the respective comparator and to the operating unit, while the output of each comparator is connected to the input of the following comparator in the chain, the first comparator receiving the input pulses and the last comparator being connected to the voltage transformer. Each comparator comprises an amplifying transistor supplied by a diode rectifier bridge.
Patent DE-2445861-A1 (DE)
Title: Vacuum cleaner with direct action fan - has thin sheet metal fan housing with interfitting shells with convex curvature
Inventor: STETTNER GERHARD ING GRAD
IPC: A47L5/12
Filed: 1974-09-26
Abstract: The vacuum cleaner machine housing contains a fan housing which comprises a lower shell facing the drive motor and an upper shelf which serves as the lid, the two shells being provided with edges set parallel to the axial direction of the fan wheel so that they engage over each other along their butt edges. Each shell has a convex outwardly aligned curvature around the periphery of their abutting edges so that the two shells can be pressed into a tight fit with each other without danger of any concave curvature which would cause a gap between the two parts. A separate wedge member is manufactured which is subsequently inserted to lie with its rear wall against the inside side of the connector member which is mounted behind the intake opening in the flow direction of the air.
Patent DE-2460879-A1 (DE)
Title: Curtain walling cladding panels fixture - with base anchored vertical rails with horizontal bolts and two panel rear anchors
Inventor: HAHN HORST
IPC: E04B2/94
Filed: 1974-12-21
Abstract: System of wall panels consists of rows of panels, with rear-mounted anchoring fittings each comprising an anchor element fixed to the base, and a detachably joined anchor element connected to the panel, esp. as used in curtain walling in front of a wall which may have an insulating sheath. Each panel (10) is fitted with two horizontally spaced anchor elements (20), extending rearwards with a holder section 24) for suspension on a carrier unit (18) on the anchor elements (16) connected to the base (13) and held by the weight of the panel. The base-connected anchor elements are in the form of vertically running carrier rails, with horizontally aligned carrier bolts as carrier units. Construction and suspension are simple and reliable.
Patent DE-2500512-A1 (DE)
Title: Filter circuit with capacitances and gyrators - gyrators earthed on both sides to form ladder network
Inventor: GOECKLER HEINZ DIPL ING
IPC: H03H11/08
Filed: 1975-01-08
Abstract: Shunt and/or series capacitors are added to the ladder network. When the number (n) of gyrators is even the maximum number of bridging gyrators is n/2-1, but when n is odd, it is (n-1)/2. Non-earthed input and output terminals of the gyrators are connected directly, or through additional capacitances, to the ladder network, so that the first bridging gyrator shunts three middle gyrators, and further, bridging gyrators shunt the next higher odd number of gyrators. Four-terminal networks with highest voltage overshoots can be placed between two transformers combined with gyrators in adjacent four-terminal networks. Gyration constants can be so determined, that in each gyrator, dependent voltage overshoots are equal to, or smaller than, independent voltage overshoots.
Patent DE-2503384-A1 (DE)
Title: Two stage, subnano range receiving differential amplifier - each stage has n-p-n transistor for emitter-coupled logic
Inventor: MEYER FRITZ DR ING
IPC: H03K5/02
Filed: 1975-01-28
Abstract: The n-p-n transistors have their emitters connected to the signal inputs. The emitters are also connected through a resistor (R3, R4) to frame (UBO). Their bases are connected together and through a current source (10) to frame (UBO). The collector-base gains of both transistor are equal. This circuitry accepts low inputs with circuit delay times which can be reckoned in the subnano range. This is because the connecting together of transistor bases achieves a rapid compensation of basis loads so that both amplifying stages can follow rapid changes of input potentials.
Patent DE-2504419-A1 (DE)
Title: Therapeutic sun bathing box - continuously turns sunbather and rotates itself for safe intensive sunbathing
Inventor: WITTKAMPF IGNATZ
IPC: A61N5/01
Filed: 1975-02-03
Abstract: The sunbather is automatically turned around thus regulating the intensity and duration of the exposure to the sun's rays. Pref. the sunbather lies on a conveyor belt (8) which in turn works over at least two rollers (6, 7) in a housing (3) that rotates about a vertical axis (4) and pivots about a horizontal axis (5). Push buttons (11, 14) are activated to turn the housing about either axis (4, 5). An electric motor can be used to drive the conveyor belt. A timer mechanism can be used to automatically rotate the housing 90 deg. about its vertical axis. The front of the housing (3) can be covered by a flap comprising a frame with a light permeable filling which can be exchanged for fillings of other colours or varying optical properties.
Patent DE-2504958-A1 (DE)
Title: Serrated edge cylindrical component - has edge periphery milled out and hardened to provide increased frictional grip
Inventor: NUERNBERGER RUDOLF
IPC: B21H7/14
Filed: 1975-02-06
Abstract: A serrated edge is formed at the end of a cylindrical component by peripherally milling the cylindrical component (1) at the edge formed by its end face (2) and its peripheral surface (6), then hardening it. Pref. the serrated edge (7) is at an angle of approx. 30 deg. to the peripheral surface. A smooth-surfaced lever (3) frictionally engages each end face of the component, and the levers are pressed against the end faces by a bolt (4) and nut (5) extending through the component and levers, so that the sharp edges of the serrations become embedded in the material of the levers. This increases the friction available for torque transmission by up to 3 times over a smooth surface.
Patent DE-2510494-A1 (DE)
Title: Window attachment device to typewriter keyboard - has rectangular cut-outs for keys and light and dark areas
Inventor: BEHRENS WALTER
IPC: G09B13/04
Filed: 1975-03-11
Abstract: The device is intended to assist students in learning to type and has the same outline as the rectangular panel of the keyboard. It includes rectangular cut-out portions for the keys, and has also bands of light and dark areas which enable specific keys to be illuminated during the course of the instruction.
Patent DE-2514212-A1 (DE)
Title: Rotary pistoned engine with compressed air fuel mixture - which is transfered by rotary slide valve from a first rotor to a second rotor
Inventor: SEIDEL KLAUS
IPC: F01C1/356
Filed: 1975-04-01
Abstract: The engine consists of two rotors coupled to a balanced common shaft inside a housing. The housing is divided by the rotors into an induction and compression side, with a transfer port leading to the compression and exhaust side. The rotors run at equal speed and each rotor performs respectively an induction and compression and an expansion and an exhaust cycle each revolution. The gases are transferred from the induction compression side to the expansion exhaust side by a rotary slide valve. The inlet and exhaust ports are opened and closed by the respective rotors as they rotate.
Patent DE-2514969-A1 (DE)
Title: Discs for safety mirrors, esp vehicle driving mirrors - glass-lined injection moulds cool under pressure preventing shrinkage
Inventor: LANG HEINRICH
IPC: B29C45/37
Filed: 1975-04-05
Abstract: Disc mirrors for safety purposes, esp. driving mirrors for motor vehicles, are made in shock-proof, hard, flexible thermoplastic synthetic material by injection moulding, with an extremely smooth surface on the side which is to be given reflecting coating. Immediately after injection, during the cooling-off phase, the disc is subjected to high pressure. The mould has at least one of its inner boundary walls formed by a replaceable body of pre-stressed single layer safety glass, 1-3mm thick, the surface layers of which are under pressure whilst the core is under tension. The mirror itself is now made resistant to breakage, and will not splinter on impact. Production costs are reduced since there is no cutting of glass and grinding of edges.
Patent DE-2516030-A1 (DE)
Title: Yarn dyeing of texturised polyacrylonitrile fibres - after stabilising the crimp by heat treatment
Inventor: STOCKMANN DIETER DIPL ING
IPC: D02G1/20
Filed: 1975-04-12
Abstract: Yarn dyeing of polyacrylonitrile fibres texturised by false-twisting at 190-210 degrees C and then subjected to a continuous heat-treatment at 80-160 degrees C. The treated yarns are taken up on spools and dyed in this form after pushing out the bobbin. The fibre-crimping is developed by the subsequent heat-treatment so that less crimp loss due to fibre shrinkage occurs during the dyeing process.
Patent DE-2517210-A1 (DE)
Title: Mouth to mouth resuscitation appts. - has mouthpieces and intermediate air purifying cartridge containing pref. potassium peroxide
IPC: A61M16/00
Filed: 1975-04-16
Abstract: Mouth to mouth resuscitation apparatus with a mouthpiece and tube for the patient and a seal to close off the mouth as well as a hose clamp fastened by a ring to the mouth tube, and with a mouthpiece for the resuscitator, whereby a known air purifying cartridge especially containing potassium peroxide is connected between the tube and mouthpiece for the resuscitator over connectors. Pref. some of the connectors are constructed so taht they can be coupled in and valves with a connector for an air filter. A container is arranged in the air purifying cartridge with a moisture or carbon dioxide dispensing agent which is opened by removing a cover from the air purifying cartridge.
Patent DE-2517513-A1 (DE)
Title: High quality three phase direct voltage regulator - responds quickly to load changes and to loss or reduction of supply phases
Inventor: WATANABE ATSUMI
IPC: H02M7/48
Filed: 1975-04-21
Abstract: The network is for controlling a direct voltage supply from a three phase mains source via suitable transformers and variable phase switched thyristors. There is a fast response to any loss or reduction of one or more supply phase voltage, and to load changes. Six thyristors are connected in a full wave rectifying bridge formation across the phases of the star connected secondaries of a mains transformer. A current detection transformer for advanced phase signals to the phase determining network, and a smoothing choke are also connected in the output circuit. Considerable attention is given to the required timing of the thyristor firing pulses in the case of one, two or three phases producing a reduced voltage, resulting from a short circuit in the mains system. Six full wave rectifiers, two operational amplifiers and various other components accommodates these possibilities. The firing pulse timing network itself is a complex array of transformers, differentiators, flip flops integrators and pulse producing circuits.
Patent DE-2524822-A1 (DE)
Title: Animal tissue dispersion and cell culture - using bacterial neutral protease as dispersant
Inventor: IRIE YOSIO
IPC: C12N5/00
Filed: 1975-06-04
Abstract: A process for dispersing animal tissue, esp. tissue culture cells, or culturing animal tissue cells is effected by admixing the tissue or culture medium with a neutral protease having the following characteristics: na) optimum pH 8.5 for casein proteolysis; (b) stable at pH 4-9; (c) active at 20-75 degrees C, optimum at 60 degrees C; (d) inactive at pH3 or pH>10 and upon heating at 65 degrees C for u0 min., (e) activity inhibited by EDTA, citric acid, o-phenanthroline, 2,2'-dipyridyl, NaF, NBS and I2; (f) activity enhanced by Ca2+, Mn2+, Mg2+, Fe2+, Fe3+ and Al3+; (g) mol. wt. 35,900 by ultracentrifugation; (h) elemental analysis of 46.57% C, 7.17% H, 31.57% O, 14.48% N, and 0.21S; and (i) cleaves the peptide bonds in the oxidised B-chain of insulin at positions Phe(1)-Val(2), His(5)-Leu(6), His(10)-Leu(11), Glu(13)-Ala(14), Ala(14)-Leu(15), Leu(15)-Tyr(16), Tyr(16)-Leu(17), Leu(17)-Val(18), Gly(23)-Phe(24), Phe(24)-Phe(25), Phe(25)-Tyr(26) and Lys(29)-Ala(30). The protease is of bacterial origin and its use in tissue culture overcomes the disadvantages of prior art systems using enzymes of animal origin, i.e. nonuniformity of quality, contamination by mycoplasm, high cost etc. The activity is not inhibited by serum, c.f. trypsin, and the protease does not damage cells.
Patent DE-2527730-A1 (DE)
Title: Display stand with hook-supporting sleeves on vertical columns - has tongues on sleeves fitting into column slots and U-strips welded to opposite diagonals
Inventor: EIZENHOEFER KARL
IPC: A47F5/06
Filed: 1975-06-21
Abstract: The square column has pairs of slots on each of its faces, and is fitted with sleeves which have corresponding springy tongues (5) on two of their opposite sides. Each sleeve, which is made in two parts for ease of fabrication, carries welded strips whose ends (6, 7, 8, 9) point outwards along the diagonals of the square column. Additional U-strips are welded to two opposite diagonals (6, 9) and braced to the other two. Thus the sleeve accommodates all eight rods from which goods can be hung. The sleeves (3) can be moved upwards simply by sliding them up the column. To move them downwards, it is also necessary to slip something inside which will hold the tongues back.
Patent DE-2546733-A1 (DE)
Title: Single sausage filling machine - has power cylinder to sever surplus sausage skin ends after squeezing and clip application
Inventor: KOLLROSS GUENTER
IPC: A22C11/12
Filed: 1975-10-17
Abstract: When single sausages are filled on a machine, using skins with a closure at the leading end, squeezing plates close the skin up when the desired amt. of sausage meat has been extruded, and a metal clip is applied. At the same time a single-acting power cylinder is actuated and a knife with a oblique cutting edge cuts off the varying surplus end of skin. This saves the manual labour of cutting off these surplus ends. These ends usually contain sausage meat and the clean cut prevents this unsightly appearance.
Patent DE-2547984-A1 (DE)
Title: Deep water pipe line laying mechanism - uses electro acoustic measuring system with hydrophones fixed to sliding tube guide
Inventor: FAULHAMMER GUNTHER DIPL ING DR
IPC: F16L1/18
Filed: 1975-10-27
Abstract: The monitoring and control of the cable laying is achieved by electro-acoustic measurements. Control of the cable position on the sea bed is achieved by a roller mechanism that runs along the length of pipe or cable. The rolling mechanism consists of a sliding tube controlled by two sheathed signalling cables (20) connected to two winches on the pipe-layer. A loudspeaker is fixed to a container (22) on the sliding tube and power is connected to it. To indicate the position of the pipe, several hydrophones are fixed to the container. The sliding tube has a V shaped frame (9) with stiffening bar (11) at its front end and guide rollers fitted to a pivot drum carried at its rear end.
Patent DE-2555917-A1 (DE)
Title: Fluid bed dryer for proteins - incorporating spray for aqueous feed with differential air velocity across bed
Inventor: ELSPASS ROLF DIPL ING
IPC: A23L3/50
Filed: 1975-12-12
Abstract: Dryer has spray or aqueous suspension through a jet into a circular fluid bed in which a bed of protein granules forms. The fluidising air velocity is varied across the bed so that max. velocity is achieved at the edge, this still being smaller than the transport velocity of the smallest particles. In the centre the velocity must be above the fluidising velocity of the largest particles and here is located a central pipe with air flowing through and a controlled offtake of solids. The air flow in this is above the transport velocity of the smallest particles so these are retained in the bed. The air temp. does not exceed 200 degrees C. The dryer is used for drying aqueous suspensions of protein material. The suspensions are heat sensitive. Spray dryers have the disadvantage that they are very space consuming. Conventional fluid beds tend to have local overheating and adverse product qualities. Also non-uniform sticking of the particles can occur. The process described overcomes the problems mentioned.
Patent DE-2556724-A1 (DE)
Title: Collar pile for mast piling - has connected steel sheet troughs with screens for filling apertures
Inventor: LACKNER FRANZ
IPC: E02D5/28
Filed: 1975-12-17
Abstract: The collar pile is for mast piling, and has a shank consisting of profiled rods. Steel sheets (5-7) are fastened at distances to each other to the lower edge of the shank, with two neighbouring sheets being connected via bridging sheets (8,9). The steel sheets each carry a screen (14-16) for the outlet aperture of filling appliances (32-34) inserted from the tip of the shank into the screens. Trough-shaped steel sheets (2,3,4) are welded together to form the shank. The steel sheets are welded, so that their side edges project over the shank edges, with the bridging sheets being fastened to the projections. A stabiliser sheet (11,12) is located vertically on each bridging section.
Patent DE-2557629-A1 (DE)
Title: Dynamic stress resistant clamping screw - has recessed leading face to reduce thread tip stress concentration
Inventor: LINDNER HORST DIPL ING
IPC: F16B35/04
Filed: 1975-12-20
Abstract: The screw fastener is for clamping the bearing cap for a crankshaft split bearing in a large i.c. engine, where high dynamic stresses are produced. The tip of the screw has a matching hole tapped (4) to fit the threaded screw section. High tension forces are induced near the socket thread roots, due to the power-driven insertion. At the tip threads (6), the tension is greatest in the socket thread crests. In order to reduce the tension, a recess (8) is cut in the leading end (7) of the screw. The recess has near-circular profile, with maximum dia.
Patent DE-2600394-A1 (DE)
Title: Linear compressor for refrigerators - has electrodynamic linear motor supplied from AC mains and oscillating synchronously with mains on springs
Inventor: WHITE HARLAN V
IPC: F04B35/04
Filed: 1976-01-07
Abstract: The compressor consists of two pistons on either end of a rod with the motor in the centre part between them. The oscillations of the motor are synchronous with the mains. It has springs forming a mechanical oscillating system whose resonant frequency corresponds to the motor mains frequency. Means respond to the amplitude of mechanical oscillations and change the natural frequency of the system, so that it increases when the oscillation amplitude rises, and decreases with falling amplitude. The pistons compress air alternately, and the cylinder heads have the type of valves used in normal air compressor practice.